diff --git a/database-update.sql b/database-update.sql
index abf621e766..96668554a4 100644
--- a/database-update.sql
+++ b/database-update.sql
@@ -10,3 +10,4 @@ CREATE TABLE `frequency` ( `freq_id` int(11) NOT NULL auto_increment, `device_id
 ALTER TABLE  `temperature` CHANGE  `temp_index`  `temp_index` int(11) NOT NULL;
 CREATE TABLE `current` ( `current_id` int(11) NOT NULL auto_increment, `device_id` int(11) NOT NULL default '0', `current_oid` varchar(64) NOT NULL, `current_index` varchar(8) NOT NULL, `current_type` varchar(32) NOT NULL, `current_descr` varchar(32) NOT NULL default '', `current_precision` int(11) NOT NULL default '1', `current_current` float default NULL, `current_limit` float default NULL, `current_limit_warn` float default NULL, `current_limit_low` float default NULL, PRIMARY KEY  (`current_id`), KEY `current_host` (`device_id`)) ENGINE=MyISAM AUTO_INCREMENT=189 DEFAULT CHARSET=latin1;
 ALTER TABLE `devices` ADD `serial` text default NULL;
+ALTER TABLE  `temperature` CHANGE  `temp_index`  `temp_index` VARCHAR(32) NOT NULL;
diff --git a/poll-reachability.php b/poll-reachability.php
index 14110e9363..0a10438617 100755
--- a/poll-reachability.php
+++ b/poll-reachability.php
@@ -46,7 +46,7 @@ while ($device = mysql_fetch_array($device_query)) {
      if ($status == '1') { 
        $stat = "Up"; 
        mysql_query("INSERT INTO alerts (importance, device_id, message) VALUES ('0', '" . $device['device_id'] . "', 'Device is up\n')");
-       mail($email, "DeviceUp: " . $device['hostname'], "Device Up: " . $device['hostname'] . " at " . date($config['timestamp_format']), $config['email_headers']);
+       mail($email, "Device Up: " . $device['hostname'], "Device Up: " . $device['hostname'] . " at " . date($config['timestamp_format']), $config['email_headers']);
      } else {
        $stat = "Down"; 
        mysql_query("INSERT INTO alerts (importance, device_id, message) VALUES ('9', '" . $device['device_id'] . "', 'Device is down\n')");